In the severals years I travelled with AirBnB, this is my first bad experience.
Unfortunately, and even though the accommodation is very nice, I had a few problems with the apartment that were not correctly handled by the host.
On the first day I started having problems with the shower, which is not a dealbreaker for me since things like this always happen (no pressure and water was pretty cold). The host informed me the staff will look into it but after the second day it was still not dealt with.
On the second day, there was some chemical smell in the room (I assumed paint from renovations somewhere around in the building).
The smell was extremely strong and even with windows open and ventilation on for several hours, it would not go away, and made me feel sick/drunk.
So I asked the host if he could move me to another room if the smell persisted after a few more hours since I saw he had other unoccupied apartments in the building from his AirBnB profile. Host told me he would "try to see what is going on with someone in the building" (of course nobody answered, and what could they have done anyways?).
After a few hours, it was still smelling horrible so I insisted on being moved to another apartment.
This started a very awkward conflict between me and the host, because first he basically told me "sorry, I know how you feel, I didn't know they did renovations" and didn't try to find a solution to the problem, trying to dodge my demand. After some insisting he told me "sorry no rooms are available".
Other rooms were indeed available so I booked one to show him that there was indeed at least 1 room available.
That room it turns out, even though it was available for instant booking, just had renovations and was dirty, so I asked for a refund, and another permanent solution. He offered yet another room (that was not supposed to be available?), but I never got the key following some more conflict (didn't want to refund the second booking).
After much arguing, we didn't come to an agreement and I had to contact AirBnB support, sleep in a room smelling like chemicals, and leave to another hotel the following morning.
I really liked the room, but I really think the host could have been more willing to fix problems that required urgent attention.
I would still recommend this accommodation if the problems are fixed.
To be fair, the host agreed to an entire refund of both the reservations, which shows he was willing to make it right in the end.